Author Topic: Lifter noise  (Read 3793 times)

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My427stang

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Re: Lifter noise
« Reply #15 on: July 13, 2019, 03:06:16 PM »
I run 10w40 or 20w50 is all of my builds, and until recently I was almost exclusively flat tappet.  I can’t imagine the original posters problem has to do with multi viscosity oil, I would be looking at preload or sloppy lifters if oil pressure is good
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Ross
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- 70 Fastback Mustang, 489 cid FE, Victor, SEFI, Erson SFT cam, TKO-600 5 speed, 4.11 9 inch.
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67428GT500

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Re: Lifter noise
« Reply #16 on: July 13, 2019, 03:14:47 PM »
I always ran Kendall with very good results back in the 80's on my Turbo vehicle. Castrol was pushed but I found it broke down quickly in my SSS 510 and Toyota Truck that Garret Air Research in Torrance used for the intercooler kit prototype and HKS for the Computer and exhaust. I tend to use Dino products in my old stuff and synthetic Mobil 1 in my SAAB 9-3 Nordic convertible I brought home from Sweden. ( 390 HP Cadillac 2.8 V6 Aero)

                                                                                                                      -Keith

Barry_R

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Re: Lifter noise
« Reply #17 on: July 13, 2019, 05:43:29 PM »

Barry and two other builders suggested I stay away from multi-viscosity oil on a flat tappet cam. I run straight Penn Grade 30. I had cold, 35-40 hot idle and 70 at cruise. (3200 @ 65)

                                                                                         -Keith

I may have recommended a straight 30 break in oil such as Gibbs or Penngrade (previously known as Brad Penn). 

Once broken in any quality oil is fine as long as it has the proper zinc/phosphorus etc formulation for a flat tappet. 

Two different statements

wayne

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Re: Lifter noise
« Reply #18 on: July 13, 2019, 06:27:58 PM »
Oil galley plug come loose or left out check the one back of distributor gear.

blykins

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Re: Lifter noise
« Reply #19 on: July 13, 2019, 07:06:02 PM »
I’ve had multiple pairs of hyd lifters be bad out of a batch before.  They will do exactly what is described, run good with plenty of pressure behind them but as soon as you shut the engine off, pressure drops and the lifters collapse immediately.
Brent Lykins
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Thumperbird

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Re: Lifter noise
« Reply #20 on: July 14, 2019, 08:10:10 AM »
Can't say for sure but had 1 stuck collapsed Morel, replaced, and another that is not responsive enough causing a light tick at start, gets a little better during run but not much.    Will be checking them all this winter, wish I could get inside them to evaluate and clean up without having to remove the rivet.

Anyone have a clever way too re-rivet these after grinding off?
Thanks.